Developer Irrational Games introduced the mode following a survey that suggested players wanted an extra challenge.

"We want to give our oldest and most committed fans an option to go back to our roots," said creative director Ken Levine.

"In 1999 Mode, gamers face more of the permanent consequences of their gameplay decisions. In BioShock Infinite, gamers will have to sweat out the results of their actions. In addition, 1999 Mode will demand that players pick specialisations, and focus on them."

BioShock Infinite will be available on Xbox 360, PlayStation 3 and PC later this year.